WO2002061795A1 - Dispositif de bobine de deviation - Google Patents

Dispositif de bobine de deviation Download PDF

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Publication number
WO2002061795A1
WO2002061795A1 PCT/JP2002/000580 JP0200580W WO02061795A1 WO 2002061795 A1 WO2002061795 A1 WO 2002061795A1 JP 0200580 W JP0200580 W JP 0200580W WO 02061795 A1 WO02061795 A1 WO 02061795A1
Authority
WO
WIPO (PCT)
Prior art keywords
deflection yoke
core
coma correction
correction coil
cores
Prior art date
Application number
PCT/JP2002/000580
Other languages
English (en)
Japanese (ja)
Inventor
Kenichiro Taniwa
Katsuyo Iwasaki
Takahiko Yoshinaga
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to US10/240,576 priority Critical patent/US6791287B2/en
Priority to EP02716400A priority patent/EP1286380A4/fr
Publication of WO2002061795A1 publication Critical patent/WO2002061795A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H01J29/705—Dynamic convergence systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/56—Correction of beam optics
    • H01J2229/568—Correction of beam optics using supplementary correction devices
    • H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
    • H01J2229/5687—Auxiliary coils

Definitions

  • the present invention relates to a deflection yoke apparatus for use in a color cathode ray tube such as a television receiver and a computer display.
  • horizontal and vertical deflection coils 2 for deflecting the electron beam emitted from the electron gun of the color cathode ray tube in the horizontal and vertical directions are disposed on the insulating frame 21.
  • a deflection yoke 3 configured as described above.
  • a pair of U-shaped cores 4a and 4b, in which four poles of the coma correction coils 5a and 5b are wound, are disposed opposite to each other across the electron beam path.
  • the U-shaped cores 4a, 4b can be slid vertically or horizontally by a sliding mechanism (not shown).
  • An object of the present invention is to provide a deflection yoke device capable of correcting misconvergence with a simple configuration without reducing the sensitivity of a coma correction coil.
  • the deflection device comprises: a deflection yoke for deflecting an electron beam emitted from an electron gun of a color cathode ray tube in the horizontal and vertical directions; and sandwiching the electron beam on the electron gun side of the deflection yoke. And a pair of cores on which the coma correction coils are wound, and a slide that enables the respective coma correction coils to be slid relative to the respective cores. It has a mechanism. According to this configuration, since the tip of the core is provided in contact with or in proximity to the neck portion of the cathode ray tube, it is possible to prevent the sensitivity of the correction coil from being lowered. Also, since it is only necessary to configure the coma correction coil so as to be slidable relative to the core, it is not necessary to add a mechanical component for sliding the core as in the prior art. Brief description of the drawings
  • FIG. 1 is a cross-sectional view showing a cathode ray tube provided with a deflection yoke device according to a first embodiment of the present invention
  • Fig. 2 is a side perspective view of the same deflection yoke device
  • Fig. 3 is a rear view showing the same deflection yoke device
  • Fig. 4 is a diagram showing magnetic lines of force when the povin of the four-pole coma correction coil according to the same deflection yoke device is slid;
  • FIG. 5 is a rear view showing a deflection yoke device according to Embodiment 2 of the present invention
  • FIG. 6 is a rear view showing a deflection yoke device according to Embodiment 3 of the present invention
  • FIG. 7A is a diagram showing the embodiment of the present invention. A rear view showing a part of the deflection yoke device in mode 4;
  • Fig. 7B is a rear view showing the operation of the same deflection yoke device.
  • FIG. 8 is a side perspective view of a conventional deflection yoke device
  • FIGS 9A-D show the state of misconvergence
  • FIGS. 1A and 1B are rear views showing the operation of the conventional deflection yoke device.
  • FIG. 1 shows a color cathode ray tube 9 on which a deflection yoke device 10 according to an embodiment of the present invention is mounted.
  • the color cathode ray tube 9 includes a panel 11 having a fluorescent screen 11a, a frame 13 for holding a shadow mask 12 disposed at a position facing the fluorescent screen 11a, and an electron gun 1 in the inside. It comprises a neck tube portion 14a in which the 5 is disposed, and a channel portion 14 for connecting the neck tube portion 14a to the panel 11.
  • the horizontal direction in fact, the direction orthogonal to the plane of the drawing
  • the vertical direction is referred to as the up-down direction.
  • the deflection yoke device 10 is provided on the outer periphery of the funnel portion 14 in order to deflect the electron beams 15 R, 15 G and 15 B emitted from the electron gun 15.
  • the deflection yoke device 10 comprises a deflection yoke 3, a pair of U-shaped cores 17a and 17b, and a slide mechanism 19 as also shown in FIGS.
  • the deflection yoke 3 is a pair of horizontal and vertical deflection coils 2 for generating a magnetic field for horizontally and vertically deflecting the electron beams 15 R, 15 G and 15 B emitted from the electron gun 15.
  • the slide mechanism 19 makes the frame correction coils 18 a and 18 b slidable with respect to the U-shaped cores 17 a and 17 b.
  • the coil correction coils 18 a and 18 b are connected in series to the vertical deflection coil 2.
  • the insulating frame 21 of the deflection yoke 3 is provided integrally with the wall surface 21a on the small diameter side of the wall surface 21a of the truncated cone shape provided with the horizontal and vertical deflection coils 2 and the wall surface 21a of the wall surface 21a.
  • a convex portion 21 c is formed in the core mounting plate portion 21 b.
  • the core mounting plate portion 21b need not necessarily be integral with the wall surface 21a, and may be provided as a separate member from the insulating frame 21. fc good.
  • the U-shaped cores 17a and 17b are fixed to the projections 21c of the core mounting plate 21b.
  • the coma correction coils 18a and 18b are wound around cylindrical povins 20a and 2O b as shown in FIG.
  • the slide mechanism 19 is such that the inner diameter of the Povins 20a, 20b is larger than the outer diameter of the U-shaped cores 17a, 17b, and the middle portion S of the U-shaped cores 17a, 17b is Pobins 20 a and 20 b are configured to be slidable in the left and right direction.
  • the inner diameter of the bobbins 20a and 20b and the outer diameter of the U-shaped cores 17a and 17b are preferably set to such a degree that their positional relationship is fixed by the frictional force. That is, it is preferable that the povins 20 a and 20 b be fitted so that the positions of the povins 20 a and 20 b do not shift unless an external force of a certain level or more is applied.
  • the inner diameter of the bobbins 20a and 20b is 6 mm-0 to (+ 0.2) mm
  • the outer diameter of the U-shaped cores 1 7 a and 17 b is 6 mm-0.50 to (+ 0) Good results can be obtained with mm.
  • the middle portion S length L 1 of the U-shaped cores 17 a and 17 b is Pobin 2 Coil winding length L 2 of 0 a, 20 b. Further, both tips of the U-shaped cores 17 a and 17 b are disposed in contact with or in close proximity to the outer peripheral surface of the neck tube portion 14 a.
  • the deflection yoke device 10 of the present invention is provided with a slide mechanism 19 that enables the frame correction coils 18a and 18b to be slidable in the left-right direction with respect to the U-shaped cores 17a and 17b.
  • the magnetic fields generated from both ends of the U-shaped cores 17a and 17b can be made asymmetric.
  • the V G slope misconvergence shown in FIG. 9C can also be corrected. As a result, an optimal image can be obtained.
  • the reason for the asymmetry of the magnetic field generated from both ends of the U-shaped core 17a (17b) is as follows. First, since the length from the coma correction coil 18a (1 8b) to the tip of the core 1 7a (1 7b) differs from side to side, the intensity of the magnetic field emitted from the tip of the left or right core is different The reason is that Second, since the position of the coma correction coil 1 8 a (1 8 b) is shifted to the left or right from the center of the U-shaped core 1 7 a (1 7 b), the coma correction coil 1 8 a (1 8 b) The effect on the electron beam by the radiation magnetic field applied directly from itself becomes asymmetry.
  • the U-shaped cores 17a and 17b keep the state in which both ends are in contact with or close to the neck tube portion 14a, and the core is attached It is fixed to the plate portion 21b, and as in the prior art shown in FIGS. 10A and 10B, the positions of both ends of the U-shaped cores 4a and 4b do not change with respect to the neck portion. Therefore, the sensitivity of the coma correction coils 18a and 18b is prevented from being lowered due to the change in the positions of both ends of the U-shaped core. Can be
  • the deflection yoke device 10 of the present invention has a configuration in which the povins 20a and 20b can be simply slid in the lateral direction with respect to the U-shaped cores 17a and 17b, as in the prior art. No need for new mechanical parts to slide the U-shaped core 4a, 4b. As a result, the configuration can be simplified as compared with the prior art, and the space for providing the U-shaped cores 17 a and 17 b in the core mounting plate portion 21 b can be reduced.
  • the deflection yoke device 10 of the present invention shown in FIG. 2 and FIG. 3 is attached to the color cathode ray tube 9 as shown in FIG. 1, and the U-shaped cores 17a, 17b
  • the deflection yoke device 10 of the present invention shown in FIG. 2 and FIG. 3 is attached to the color cathode ray tube 9 as shown in FIG. 1, and the U-shaped cores 17a, 17b
  • the color cathode ray tube 9 is a 46 (cm) cathode ray tube for a computer monitor.
  • the amount of correction mentioned above means that when one of Pobins 20a and 2Ob in FIG. 3 is slid from the center Y to the left or right, the electron beam is horizontal in the peripheral portion of the panel shown in FIG. 9C. Distance to move say E.
  • the distance E changes by 0.1 mm when Povins 20a, 20 slide the distance of 20% of the coil winding length L 2 from the center Y to the left or right. I was able to confirm that.
  • the povins 20a and 20b are configured to be slidable in the left-right direction with respect to the middle portion S of the U-shaped cores 17a and 17b is described.
  • the effect is not limited to this.
  • Povin may slide up and down. According to this configuration, it is possible to correct the YH misconvergence shown in FIG. 9A due to the deviation of the central axes of the color cathode ray tube and the deflection yoke 3 in the vertical direction.
  • the cores 17a and 17b are formed in a U shape, and the pair of cores 17a and 17b are arranged in the vertical direction as an example. It is not limited. Depending on the form of misconvergence, the shape and position can be selected appropriately.
  • the configuration shown in FIG. 5 is used.
  • a pair of E-shaped cores 30a and 3Ob are provided in the left and right direction, and the coma correction coils 31a and 31b are wound around the legs of the E-shaped cores 30a and 30b, respectively.
  • Wear povins 32 a and 32 b By sliding Povins 32 a and 32 b respectively in the left and right directions, the VR convergence can be reduced.
  • the deflection device in the third embodiment will be described with reference to FIG.
  • the configuration of this embodiment is used to correct the Yv misconvergence shown in FIG. 9B.
  • a pair of I-shaped cores 40a and 4Ob are provided in the left and right direction, and the povins 42a and 42b on which the correction coils 4la and 41b are wound are attached to the respective rod portions. Do. By sliding the Povins 42a and 42b in the left and right direction, respectively, it is possible to reduce the Yv mismatch. (Embodiment 4)
  • FIGS. 7A and 7B show a part of the deflection yoke device in the third embodiment.
  • the inside diameter of Povin 20a (indicated by a broken line) is sufficiently larger than the outside diameter of a U-shaped core 17a (indicated by a broken line). It is set.
  • the coma correction coil 18a can slide or translate, as well as rotate, with respect to the U-shaped core 17a. That is, the coma correction coil 18a can slide in the axial direction of the U-shaped core 17a, and can rotate such that the angle with respect to the axis of the U-shaped core 17a changes.
  • This configuration can also make the magnetic field asymmetric. For example, when the coma correction coil 18a is positioned at the center of the U-shaped core 17a and rotated only, asymmetry of the influence of the radiation magnetic field from the coma correction coil 18a is obtained. Ru.
  • the U-shaped core 17a that is, the coma correction coil 18a
  • the inner diameter of the povin 20a may be 13 mm
  • the outer diameter of the U-shaped core 17a may be 6 mm.
  • the projection height of the convex portion 21c of the core mounting plate portion 21b in FIG. 2 is appropriately determined, and Povin 20a is appropriately selected by the core mounting plate portion 21b and the U-shaped core 17a. It is preferable to clamp by force, so that it is possible to temporarily fix the coma correction coil 18a and to easily correct the position.
  • the coma correction coils 18a, 18b, 31a, 31b, 41a, 41b described in the above embodiments are connected in series to the vertical deflection coil 2. However, not limited to this, misconvergence can be corrected even when connected in series with the horizontal deflection coil.
  • the present invention it is possible to provide a deflection yoke device capable of correcting the misconvergence with a simple configuration without reducing the sensitivity of the coma correction coil. As a result, when this deflection yoke device is mounted on a cathode ray tube, an optimum image can be obtained.

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  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

Dispositif de bobine de déviation comprenant une bobine (3) de déviation pour dévier un faisceau d'électrons émis par un canon à électrons dans un TRC couleurs dans les sens horizontal et vertical ; des bobinages (18a, 18b) de correction de coma placés de façon opposée du côté canon à électrons de la bobine de déviation, de manière à prendre en sandwich le faisceau d'électrons ; et deux noyaux (17a, 17b) autour desquels sont bobinés les bobinages de correction de coma. Le dispositif comporte en outre un mécanisme (19) coulissant permettant aux bobines de correction de coma respectives de coulisser par rapport aux noyaux respectifs, ce qui permet de corriger des défauts de convergence avec une structure simple sans sacrifier la sensibilité des bobines de correction de coma.
PCT/JP2002/000580 2001-01-29 2002-01-28 Dispositif de bobine de deviation WO2002061795A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/240,576 US6791287B2 (en) 2001-01-29 2002-01-28 Deflection yoke device
EP02716400A EP1286380A4 (fr) 2001-01-29 2002-01-28 Dispositif de bobine de deviation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-019553 2001-01-29
JP2001019553 2001-01-29

Publications (1)

Publication Number Publication Date
WO2002061795A1 true WO2002061795A1 (fr) 2002-08-08

Family

ID=18885412

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/000580 WO2002061795A1 (fr) 2001-01-29 2002-01-28 Dispositif de bobine de deviation

Country Status (5)

Country Link
US (1) US6791287B2 (fr)
EP (1) EP1286380A4 (fr)
KR (1) KR100465275B1 (fr)
CN (1) CN1225767C (fr)
WO (1) WO2002061795A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004355855A (ja) * 2003-05-27 2004-12-16 Matsushita Electric Ind Co Ltd 偏向ヨークおよびカラー受像管装置
US7211941B2 (en) * 2004-02-02 2007-05-01 Matsushita Toshiba Picture Display Co., Ltd. Deflection yoke and cathode-ray tube apparatus
JP2007213935A (ja) * 2006-02-08 2007-08-23 Mt Picture Display Co Ltd 陰極線管装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480192U (fr) * 1990-11-26 1992-07-13
JPH07326304A (ja) * 1994-05-31 1995-12-12 Matsushita Electric Ind Co Ltd 偏向ヨーク
JPH1050237A (ja) * 1996-07-30 1998-02-20 Sony Corp 偏向ヨーク及び陰極線管装置
JPH11213915A (ja) * 1998-01-28 1999-08-06 Nec Kansai Ltd カラー陰極線管用偏向ヨーク装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267541A (en) * 1978-12-15 1981-05-12 Denki Onkyo Co., Ltd. Deflection yoke apparatus with convergence device for in-line color television cathode-ray tube
JPS6237849A (ja) * 1985-08-09 1987-02-18 Denki Onkyo Co Ltd 偏向ヨ−ク装置
JPH0670895B2 (ja) * 1986-10-31 1994-09-07 株式会社東芝 カラ−受像管
JPH07322276A (ja) * 1994-05-23 1995-12-08 Hitachi Ltd 偏向ヨーク装置及びそれを用いたカラー陰極線管装置
KR960028150A (ko) * 1994-12-23 1996-07-22 구자홍 티브이(tv)의 코마에러 보정장치
TW263592B (en) * 1995-01-31 1995-11-21 Mitsubishi Electric Machine Convergence modification device
JPH1080192A (ja) 1996-09-02 1998-03-24 Saginomiya Seisakusho Inc パルスモータ制御装置、ホイールアラインメント測定装置、パルスモータ制御方法及びホイールアラインメント測定方法
JPH1154067A (ja) 1997-07-30 1999-02-26 Nec Kansai Ltd カラー陰極線管用偏向ヨーク装置
JP2000277037A (ja) * 1999-03-29 2000-10-06 Sony Corp 偏向ヨークおよび陰極線管
JP2001196012A (ja) * 2000-01-13 2001-07-19 Nec Kansai Ltd 偏向ヨーク及びカラー陰極線管のミスコンバーゼンス補正方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0480192U (fr) * 1990-11-26 1992-07-13
JPH07326304A (ja) * 1994-05-31 1995-12-12 Matsushita Electric Ind Co Ltd 偏向ヨーク
JPH1050237A (ja) * 1996-07-30 1998-02-20 Sony Corp 偏向ヨーク及び陰極線管装置
JPH11213915A (ja) * 1998-01-28 1999-08-06 Nec Kansai Ltd カラー陰極線管用偏向ヨーク装置

Also Published As

Publication number Publication date
US20030173913A1 (en) 2003-09-18
US6791287B2 (en) 2004-09-14
EP1286380A1 (fr) 2003-02-26
EP1286380A4 (fr) 2006-06-28
CN1455945A (zh) 2003-11-12
KR100465275B1 (ko) 2005-01-13
KR20020087425A (ko) 2002-11-22
CN1225767C (zh) 2005-11-02

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